3 years ago

If f(x)=4x²-6x-1 and g(x)= -x²-5x+3, find (f+g)(x)

1 answer:

6 0

$f(x)=4x^2-6x-1;\ g(x)=-x^2-5x+3\\\\(f+g)(x)=f(x)+g(x)=(4x^2-6x-1)+(-x^2-5x+3)=4x^2-6x-1-x^2-5x+3\\\\\text{combine like terms}\\\\=(4x^2-x^2)(-5x-6x)+(-1+3)=3x^2-11x+2$

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